78723735943 has 8 divisors (see below), whose sum is σ = 83459515520. Its totient is φ = 74125225440.

The previous prime is 78723735901. The next prime is 78723735953. The reversal of 78723735943 is 34953732787.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 78723735943 - 2¹⁷ = 78723604871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78723735953) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34316088 + ... + 34318381.

It is an arithmetic number, because the mean of its divisors is an integer number (10432439440).

Almost surely, 2^78723735943 is an apocalyptic number.

78723735943 is a deficient number, since it is larger than the sum of its proper divisors (4735779577).

78723735943 is a wasteful number, since it uses less digits than its factorization.

78723735943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68634537.

The product of its digits is 26671680, while the sum is 58.

The spelling of 78723735943 in words is "seventy-eight billion, seven hundred twenty-three million, seven hundred thirty-five thousand, nine hundred forty-three".